MOT failure data · 2025
Renault Master MOT problems
Across every Renault Master that failed its 2025 MOT, the defect testers recorded most often was rbt (sp) efficiency below requirements, on 6.52% of failure items. The broadest problem area was brakes at 29.62%. These are recorded defects across the model, not a diagnosis of any one car.
Most common Renault Master MOT failures
| # | Recorded defect | Area | Share |
|---|---|---|---|
| 1 | Rbt (sp) efficiency below requirements | Brakes | 6.52% |
| 2 | Ball joint ball joint excessively worn | Suspension | 3.95% |
| 3 | Position lamp not working | Lamps, reflectors and electrical equipment | 3.79% |
| 4 | Joints constant velocity boot split or insecure, no longer prevents the ingress of dirt | Body, chassis, structure | 3.65% |
| 5 | Wipers does not clear the windscreen effectively | Visibility | 3.57% |
| 6 | Service brake performance excessively binding | Brakes | 3.49% |
| 7 | Steering rack gaiter missing or no longer prevents the ingress of dirt | Steering | 3.37% |
| 8 | Parking brake performance inoperative on one side | Brakes | 2.56% |
| 9 | Component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength | Suspension | 2.51% |
| 10 | Rigid brake pipes excessively corroded | Brakes | 2.17% |
Shares are of all recorded failure items for this model, so they sum to less than 100% — a single failed test often records several defects, and the long tail below the top 10 is not shown.
What this means if you are buying one
Use it as a viewing checklist. If you are looking at a Renault Master, these are the areas worth inspecting and worth asking about — and worth reading the car's own MOT history for, since a defect that keeps reappearing as an advisory is a better signal than any model-wide average.
The MOT record also has hard limits: it does not check the engine, clutch or gearbox, and it says nothing about outstanding finance, insurance write-off history, stolen markers or whether the mileage is genuine. Our used Renault Master buying guide covers what to check beyond the MOT.
Checking a specific Renault Master?
Enter its registration for finance, write-off, stolen, mileage and keeper history.
Other Renault models
- Renault Clio MOT problems
- Renault Captur MOT problems
- Renault Trafic MOT problems
- Renault Megane MOT problems
- Renault Kadjar MOT problems
- Renault Kangoo MOT problems
Renault Master MOT FAQs
What does a Renault Master most commonly fail its MOT on?
The single most recorded defect on Renault Master cars failing their 2025 MOT was "rbt (sp) efficiency below requirements", appearing on 6.52% of failure items.
Does this mean my Renault Master will fail?
No. This is what testers recorded across every Renault Master that failed in 2025. It shows where this model tends to need attention, not the condition of any individual car. The Renault Master passed 71.92% of its initial tests.
How do I see a specific Renault Master's MOT history?
Enter its registration on our free MOT history check to see that car's own test results, advisories and recorded mileages.
See also: Renault Master MOT pass rate · used Renault Master buying guide · free MOT history check
Defect counts from the DVSA MOT Anonymised test-item data for 2025 (class 4 initial tests, failure items only — advisories and minor defects excluded), licensed under the Open Government Licence v3.0.